Analysis of Overheating Fault of Electric Rolling-contact-type Isolator

YUE Yong-gang; BAI Zhi-qiang; ZHAO Mo-lin; WANG Lei; WANG Ya-ping; HUO Feng; WANG Yong-jun; ZHAO Gui-yong; ZANG Zheng-nin

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Analysis of Overheating Fault of Electric Rolling-contact-type Isolator

更新时间：2025-04-26

- Analysis of Overheating Fault of Electric Rolling-contact-type Isolator
- High VoltageApparatus Vol. 44, Issue 6, Pages: 592-595(2008)
- 作者机构：
  
  内蒙古超高压供电局
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM564.1
- Published：2008
- 稿件说明：
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[1]岳永刚,白志强,赵墨林,王磊,王亚平,霍峰,王永军,赵贵勇,臧政宁.采用导电滚动触头的隔离开关过热故障分析[J].高压电器,2008,44(06):592-595.

YUE Yong-gang, BAI Zhi-qiang, ZHAO Mo-lin, et al. Analysis of Overheating Fault of Electric Rolling-contact-type Isolator[J]. High voltageapparatus, 2008, 44(6): 592-595.
[1]岳永刚,白志强,赵墨林,王磊,王亚平,霍峰,王永军,赵贵勇,臧政宁.采用导电滚动触头的隔离开关过热故障分析[J].高压电器,2008,44(06):592-595. DOI：

YUE Yong-gang, BAI Zhi-qiang, ZHAO Mo-lin, et al. Analysis of Overheating Fault of Electric Rolling-contact-type Isolator[J]. High voltageapparatus, 2008, 44(6): 592-595. DOI：

摘要

针对近几年蒙西500 kV电网中发生的多起由于使用导电滚动触头的隔离开关引起隔离开关局部过热事故

笔者进行了研究

发现风沙气候与隔离开关关节座的特殊结构是引起该结构隔离开关过热故障的主要原因

提出采用金属导电带、更换隔离开关拐臂滚轮材质及更改滚动触头结构的解决方案

并对用于蒙西及西北等类似风沙自然环境地区的隔离开关设计及使用提出了建议。实际应用表明

改造后设备温度一直保持正常水平

该结构隔离开关过热问题从根本上得到了解决。

Abstract

In recent years

many accidents have happened on the 500 kV power networks in Western Inner Mongolia due to overheating of electric rolling-contact-type isolator.Wind-sand weather and special structure of knuckle assembly are found the main reasons for inducing overheating fault of this type of isolator.Solutions are put forward

which include using conducting metal belt

replacing material of knuckle roller

and modifying structure of rolling-contact assembly.Moreover

some suggestions are proposed for design and application of the isolators in Western Inner Mongolia and Northwestern China which have similar natural wind-sand weather.

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